Other questions in this quiz

2. What happens to a wave when it passes a doorway?

  • It doesnt change
  • It defracts
  • It stops

3. What is the trough on a wave?

  • the lowest point on a wave
  • the highest point on a wave

4. If i spend £400 on a solar panel and the panel saves me £20 a year what is the payback time??

  • 10 years
  • 20 years
  • 40 years

5. Why is it better?

  • The signal is less likely to be lost or inturrupted
  • it travels faster


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